Junos Layer 3 VPNs

Description

This course is designed to provide participants with MPLS-based Layer 3 virtual private network (VPN) knowledge and configuration examples. The course includes an overview of MPLS Layer 3 VPN concepts, scaling Layer 3 VPNs, Internet access, Interprovider L3VPNs, and Multicast for Layer 3 VPNs. This course also covers Junos operating system-specific implementations of Layer 3 VPNs and is based on the Junos OS Release 15.1R2.9. Through demonstrations and hands-on labs, participants will gain experience in configuring and monitoring the Junos OS and in device operations. This course benefits individuals responsible for configuring and monitoring devices running the Junos OS.

Objectives:

• Describe the value of MPLS VPNs;
• Describe the differences between provider-provisioned VPNs and customer-provisioned VPNs;
• Describe the differences between Layer 2 VPNs and Layer 3 VPNs;
• List the provider-provisioned MPLS VPN features supported by the JUNOS software;
• Describe the roles of a CE device, PE router, and P router in a BGP Layer 3 VPN;
• Describe the format of the BGP routing information, including VPN-IPv4 addresses and route distinguishers;
• Describe the propagation of VPN routing information within an AS;
• List the BGP design constraints to enable Layer 3 VPNs within a provider network;
• Explain the operation of the Layer 3 VPN data plane within a provider network;
• Create a routing instance, assign interfaces to a routing instance, create routes in a routing instance, and import/export routes from a routing instance using route distinguishers/route targets;
• Describe the purpose of BGP extended communities, configure extended BGP extended communities, and use BGP extended communities;
• List the steps necessary for proper operation of a PE-CE dynamic routing protocol;
• List the troubleshooting and monitoring techniques for routing instances;
• Explain the difference between the bgp.l3vpn table and the inet.0 table of a routing instance;
• Monitor the operation of a CE-PE dynamic routing protocol;
• Explain the operation of a PE mulit-access interface in a Layer 3 VPN and list commands to modify that behavior;
• Describe ways to support communication between sites attached to a common PE router;
• Provision and troubleshoot hub-and-spoke Layer 3 VPNs;
• Describe the flow of control traffic and data traffic in a hub-and-spoke Layer 3 VPN;
• Describe QoS mechanisms available in L3VPNs;
• Configure L3VPN over GRE tunnels;
• Describe the RFC 4364 VPN options;
• Describe the carrier-of-carriers model;
• Configure the carrier-of-carriers and “Option C” configuration;
• Describe the flow of control and data traffic in a draft-rosen multicast VPN;
• Describe the configuration steps for establishing a draft-rosen multicast VPN;
• Monitor and verify the operation of draft-rosen multicast VPNs;
• Describe the flow of control traffic and data traffic in a next-generation multicast VPN;
• Describe the configuration steps for establishing a next-generation multicast VPN;
• Describe the configuration steps for establishing a next-generation multicast VPN;
• Monitor and verify the operation of next-generation multicast VPNs;
• Describe the flow of control traffic and data traffic when using MPVNs for Internet multicast;
• Describe the configuration steps for enabling internet multicast using MVPNs; and
• Monitor and verify the operation of MVPN internet multicast.